Significant issues with a part of Pembroke’s tidal barrage are not expected to be fully fixed before late January, councillors have heard.

Pembroke councillors Aaron Carey and Jonathan Grimes submitted an urgent question heard at the December meeting of Pembrokeshire County Council, which said: “In light of the repeated flooding events across the county – including the recent overflow at Castle Pond and the acknowledgement by your own Coastal, Rivers & Drainage Team that the barrage tipping gate remains inoperable until mid-January can you explain what assessment has been made of the adequacy of our tidal outfall infrastructure in the face of current and projected future storm surges and sea-level rise?

“If no such assessment has yet been undertaken, will you commit now to commissioning an immediate structural and risk-capacity audit, with a report to full council within three months, and with proposals for funding any remedial works required — to avoid recurring damage and disruption to residents, highways, and public amenities?”

Responding to the urgent question, Cabinet Member for Residents Services Cllr Rhys Sinnett said a significant assessment of the Pembroke Tidal Barrage had already been undertaken over the past two years, with regular inspections.

He said “a comprehensive package of works” began in September which were due to be completed before Christmas but said there had been “significant issues” with the tipping gate hydraulic ram, with a significant overhaul now taking place, with reinstatement expected by late January.

He told members additional mitigation measures were now in place and, once works are completed, enhanced works will provide improved resilience and “long-term reliability,” with further reports due to come to Cabinet.

Cllr Carey and Cllr Grimes had also submitted a notice of motion saying: “That this council notes with concern the repeated and increasingly severe flooding experienced in our coastal, estuarial and river-fringe communities over recent weeks — in particular the flooding events affecting the Commons/Castle Pond area.

“That the council further notes that, according to correspondence from the Coastal, Rivers & Drainage Team Manager, the tipping gate at the barrage remains out of operation until mid-January due to mechanical issues; meanwhile high tide, heavy rain, wind-driven tidal surges and overspill at the sluice have combined to overwhelm the drainage/outfall infrastructure.

“That we recognise the current maintenance schedule (delayed ‘til after the summer season) and the justification given — but further that such planning failed to foresee the likelihood of severe winter storm and surge events, which climate change makes more frequent and more intense.

“That this council therefore calls on the Cabinet to commission an urgent review of:

“That, pending the outcome of the review, the council should allocate appropriate emergency capital funding to remediate the barrages / sluices / outfalls at risk of failure or blockage — to safeguard residents, properties, highways and public amenities from further flooding.

“That, further, this council resolves to publish a public flood-resilience plan for the county, identifying all coastal and river-fringe ‘hotspots,’ maintenance schedules, responsible teams, and a transparent timeline for upgrades or remedial works — so residents have clarity and confidence in flood prevention measures.”

The notice of motion itself will be considered by the council’s Cabinet at a later date.